Karpov 109

Figure 35c. Differential GPS positions indicating presence of the fishes in Figure 35c on ROV dive

transects in the southern portion of PGER. Inside bars represent modified primary substrate types as

determined from ROV videotape. Outside bars represent relief categories.

Karpov 110

Figure 36a. Differential GPS positions indicating presence of the macroinvertebrates, Tethya aurantia,

and an unidentified gorgonian at PGER. Positions are superimposed on ROV dive transects along with

bathymetry over the analog sidescan sonar image.

Karpov 111

Figure 36b. Differential GPS positions indicating presence of the fishes in Figure 36a on ROV dive transects

in the northern portion of PGER. Inside bars represent modified primary substrate types as determined from

ROV videotape. Outside bars represent relief categories.

Karpov 112

Figure 36c. Differential GPS positions indicating presence of the fishes in Figure 36a on ROV dive

transects in the southern portion of PGER. Inside bars represent modified primary substrate types as

determined from ROV videotape. Outside bars represent relief categories.

Karpov 113

Figure 37a. Differential GPS positions indicating presence of the macroinvertebrates, Parastichopus

californicus, and Strongylocentrotus franciscanus at PGER. Positions are superimposed on ROV dive

transects along with bathymetry over the analog sidescan sonar image.

Karpov 114

Figure 37b. Differential GPS positions indicating presence of the fishes in Figure 37a on ROV dive

transects in the northern portion of PGER. Inside bars represent modified primary substrate types as

determined from ROV videotape. Outside bars represent relief categories.

Karpov 115

Figure 37c. Differential GPS positions indicating presence of the fishes in Figure 37a on ROV dive

transects in the southern portion of PGER. Inside bars represent modified primary substrate types as

determined from ROV videotape. Outside bars represent relief categories.

Karpov 116

02468

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Size (mm)

Num

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Obse

rved

PGER

PCMR

Figure 38. Comparison of size distribution of the California sea cucumber,

Parastichopus californicus, from PGER and PCMR. Bars represent frequency

in each length category. A total of 51 cucumbers were measured from five

transects at PGER and a total of 30 cucumbers were measured from one

transect at PCMR.

Karpov 117

Figure 39. California sea cucumber, Parastichopus californicus, from ROV digital

videotape. The cucumbers were found over “RockSand1” habitat (Rock habitat

with <33% sand as secondary substrate) with medium relief (1–3 m) at a depth of

36.3 m (October 3, 1999).

Karpov 118

Figure 40. Rock with evidence of sand scour at its base. Nearly the lower half

of the rock has been scoured by sand (October 3, 1999).

Karpov 119

Figure 41. (a) The sand impacted aggregated nipple sponge, Polymastia pachymastia,

at a depth of 35.3 m (October 3, 1999). (b) Close up of P. pachymastia.

Karpov 120

Figure 42. The brown alga, Laminaria dentigera, with holdfast covered by shifting sand

at a depth of 20.6 m (October 6, 1999).